Jarno Asks an F1 Engineer About This MAJOR F1 24 Problem...

this is the greatest tyre debate of All Time
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[@lulu98769]

FYI this clip isn't even 4 minutes but the actual discussion on stream lasted an hour lmao

[@WigSplitters]

i mean there isn't really a right answer, you cant just use the ideal gas laws because those are for ideal circumstances and there are a lot of other factors, and even if it is the right answer its the right answer for the wrong reasons because of all the other factors

[@jordydewaal3245]

@@WigSplitters Simply put, gasses expand when they get hotter, that's not just in ideal circumstances, that's just what it actually is. Because it wants to expand but it can't (since the tyre keeps in within that same space) the pressure rises.

[@WigSplitters]

@@jordydewaal3245 ofc i know the gas wants to expand if heated and pressure is constant, i know the gas laws. but i am saying you can only apply the gas laws if you are specifically talking about the core tire temp, if you are talking about the external tire temp then you cannot use the gas laws

[@jordydewaal3245]

@@WigSplitters ah right I totally missed that you’re right, sorry!

[@WigSplitters]

@jordydewaal3245 nah dude it's all good, u weren't even being rude no need to be sorry

[@bukharijabarazman2700]

Glad to see the F1 game didn’t master 9th grade physics…

[@ryanchivwara5013]

It's weird though because in F1 2020 higher pressures = higher temperature so they just swapped it for some reason on this game

[@LongTimeAgoNL]

They just thought: " My Nissan Altima in front of the office is lower tyre pressure = more temp. So this must be the same for F1." And just went with it.

[@IsakPersson17]

@@ryanchivwara5013 Even f1 23 says higher pressure = higher temp

[@kapitumbulu]

@@ryanchivwara5013the reason they swapped is because they are IDIOTS.

[@14768]

You all are talking about 2 different things, that's why you are confused. Running a lower tire pressure will increase the amount of heating due to deformation of the tire AND a tire getting hot will increase the pressure. Jarno is talking about the 2nd thing, chat is talking about the first thing, and both are correct. Lower pressure causes more heating, heating causes higher pressure is another way to say it. Classic miscommunication. The problem is in the game if you start at 5PSI below optimum temperature and the tires overheat they will only increase pressure by 1 or 2 PSI so they wont overcome the difference to get back to the pressure that doesn't cause overheating.

[@RonniePeterson]

Nah. This is simple. The game is shite!

[@sebdepp5653]

I think they did talk about the same thing and were just talking about the two things at the same time. Btw a lower tire pressure does not make a tire overheat more. That's what jarno was trying to say the whole time. When you have a lower pressure a larger part of the tire is in contact with the road and thus, the same amount of load is distributed over a larger surface, generating less heat. Also, deformation of the tire doesn't generate any heat.

[@14768]

@@sebdepp5653 Wrong. 100% wrong. Look it up, tons of scientific papers about it. Lower tire pressure, more deformation, more heat. It has nothing to do with contact patch.

[@jordydewaal3245]

@@sebdepp5653 so in that sense, more contact also equals more friction right, as it’s dragging the rubber over the track?

[@Nando_Lorris_04]

Higher pressure increases the number of particle collisions, increasing the internal temperature of the tyre. So higher pressure increases the temp more than lower pressure

[@fpupesh]

none of these people who argued probably knows that FIA sets minimum pressures otherwise the f1 teams will probably run flat tyres

[@meg_Lepi]

Actually, its Pirelli, not FIA but thats besides the point. Higher pressure equals higher temps. Its been like that in the games since forever, I have no idea why Codies turned this all the way around....makes less then 0 sense

[@jordydewaal3245]

@@meg_Lepi he’s arguing about it being realistic I guess? So if a change makes it more realistic, then why is he upset. The point isn’t what the past games did, it’s whether it’s correct or not. Either that or I’ve missed the point of the video 😂

[@fpupesh]

@@meg_Lepi cause they are the masters of code

[@ArchOfficial]

No they wouldn't. Tires have an optimal pressure for lateral/longitudinal depending on load, camber etc. Let's say 30psi and 15psi @ 0 camber. Running below those is more carcass temp in rolling, although you overall make less temp due to decreased force into the tire and the center will be colder. Running above those is less carcass temp in rolling, overall less temp due to decreased force into the tire and the center will be hotter. With flexible enough tires, the optimal longitudinal might be like 2 or 3 psi ala. drag tires, but it's typically much higher in racing tires. It's also why when drifting with high power you'd tend to run closer to the optimal longitudinal, and when racing you'd run closer to the optimal lateral. The more downforce, the higher pressure bias in general due to, in general, optimal pressures increasing with load. It's also not exactly this simple because camber, temp, probably wear etc. plays into it. No sim, of any kind, has accurate pressure and temp sim.

[@fpupesh]

@@ArchOfficial it was a joke man but thank you for the explanation

[@dubby_ow]

Tyre pressures increase as the temps go higher, but lower starting pressure can result in overheating sooner and higher wear. This is similar to softer tyre compounds, rubber has to stretch and compress more with less air in it. The air is what keeps it stable at optimal tyre temps, thats how it works in Assetto Corsa at least. In general if Jarno is overheating his pressure should go up. EDIT: additional note - If you use this comment to make your setup better (in AC) in case of tyre overheating, sometimes you need to go to for a harder compound if the tyre pressure tweaks aren't enough. I often overheat on front with softs making them go 27psi hot and to get 26 (green optimal) I lowered front pressures by 1psi. Tyres did overheat, but only for the last sector of my hotlap (GT3 cars @ Spa) so I felt its worth it. In most cases, you would need to go to medium. Optimal compound and hot temps (psi hot/max at optimum) is what keeps consistent grip and wear levels, especially in races and in high ambient temps. On cold tracks with below 10C you can easily use soft for races, but in 26C they would die fast, so make setups with temperature notes in the name. If the weather is cold you want higher tyre pressures and when its hot you want them lower or switch to harder tyres.

[@ManOfPillowDoom]

"Please never have an opinion on racing again thank you" he's so arrogant lmao

[@WigSplitters]

@@ManOfPillowDoom ^imagine getting offended over an opinion

[@dubby_ow]

@ManOfPillowDoom @WigSplitters by watching the clip alone I can tell you 2 things: 1. If the tyres are overheating more, because starting pressures were low - Jarno's mistake. 2. If tyre pressures dropped as a result of overheating - game engine issue, because it has to go up.

[@jordydewaal3245]

@@dubby_ow but that’s the problem, they aren’t talking about the pressure going up due to higher temps, but the temps going up because of higher pressure.

[@ArchOfficial]

AC does not have a temperature rate interaction due to pressure. Temperatures also mostly don't matter in vanilla AC/ACC cars.

[@SRT302]

pV = NkT -> T = pV/Nk Temperature = (pressure x volume)/(Number of molecules x Boltzmann constant) In this context, an increase in pressure will increase temperature

[@EnigmaticAlias]

Now that is why you go to school kids

[@Henrix1998]

Twisting the formula like that just doesn't apply here. Nothing (except the heat) is trying to expand or shrink the tyre, it doesn't drive the temperature higher. However, higher temperature will drive pressure higher.

[@EnigmaticAlias]

@@Henrix1998 ​So obviously, higher than normal pressure will overheat the tyres easily over a lap of pushing-right? But the in the game, it is blatantly stated that "Lower tyre pressure also contributes to higher temperatures", if you read the last line in the description area of the setup in-game. The game says, lower pressure=higher temps :\

[@JuicedOnKids]

​@@EnigmaticAliasbruh, I've applied F1 tyre logic to ACC/rFactor for a few years. 😭😭😭 I'm in absolute shambles. I knew the physics were broken, but dear god.

[@carsonf1]

If you are adding pressure to a tire the air in the tire will heat up. But overtime it will return back to ambient temperature. Friction is causing the tire to heat up while driving. Less pressure can increase friction and increase temperature.

[@ccramit]

Jarno's questions are kind of confusing though. Tire temps are far more complex than just pressure.

[@pydu91]

So the thing is, we need to differenciate the pressure with cold tyres out of the pits and the pressures while driving. If you go out with less pressure, the rolling resistance and deformation will cause more heat, but also it will be more localised and on the tyre surface. This heat in exchange will increase the tyre pressures (while driving), so you would end up with an increased pressure but fewer air molecules, and maybe overheating tyres if you go too far. However, starting with higher pressures will cause the tyres to initially heat more, given that the air is confined in a somewhat constant volume, but with a more stable and distributed heat, which can help control the grip and wear in the long run, and avoid overheating due to friction / grip loss / rolling resistance / etc. Both Jarno and chat are kinda correct, but not talking about the same things. TLDR : higher pressures can help combat overheat and instability, but can also do the opposite if you go too far.

[@arox123]

This debate is making my head hurt, you are all arguing about two different things

[@GuninGames]

Once upon a time Tires flexed more thereby heating up more with less air pressure, THE END!

[@KJ28554]

If they don’t update this game soon F1’s gonna lose a lot of players and probably already have

[@colored_lonely]

They don't have a lot to begin with. 70 euros for roster update (really lol, no new drivers) and a lot of new bugs.

[@rama-n-i]

Community was already cooked, this was a warning for things to come, or a…. Red Flag

[@CockMcBallsddd]

But they won't. They put out shit game after shit game, everyone knows what's coming, and they still buy the new one. That's why EA won't fix anything, they don't need to. All they care about are sales and until people stop buying their garbage, they couldn't care less about our player experience.

[@Holoflux]

They already lost me with F1 2021 lol

[@1995oskardukowski]

Is EA game the uodate will be next year and will cost around 70-75 €

[@elliotbulley1849]

The Dunning-Kruger effect in action. 🍿

[@elliotbulley1849]

Fun fact, if you apply the Dunning-Kruger curve to this games tyre temps it’s very similar.

[@batohcz7568]

If you have the same slip angle and slip ratio lower pressure will generate more heat because of higher losses

[@bundesautobahn7]

I couldn’t even warm up my tires on the formation lap. It didn’t let me do burnouts.

[@jasonmichaelsmart4803]

I think everyone is oversimplifying this and you cannot oversimplify tire dynamics. Both things everyone is arguing can be right, but the BALANCE of them is what matters. All things equal a lower tire pressure should generate more heat when a load is applied. But lower pressure means a larger contact patch and more pliable tire which means more grip. More grip means less sliding and less sliding means less heat. Also I believe that on thermal balance, a large component of tire cooling is due to conduction through the contact patch to the road on straights. This means a larger contact patch will create more cooling. So I believe it’s really dependent on the car, track, tire, driver combination. But in general, especially for formula 1, lower pressures within a range will create lower temps, and this is easily true for the minimum pressures set by the regulations. Maybe it’s different for sports and road cars.

[@ArchOfficial]

Go run 0.1psi in your real car and report back on grip.

[@tozkal96]

@@ArchOfficial when people talk about low or high pressiure in tires they usually mean reasonable pressure within the tires working range. obviously having half a bar or four bars in a tire wont do much good when it comes to grip or managing heat very good. but if we speak about strictly grip id say that having two bars is most likely giving more grip than having three bars, aka low pressure give more grip than high (unless we talk about cars with downforce then that low pressure might not be able to handle the load).

[@ArchOfficial]

@@tozkal96 When people talk about high or low pressure, they talk about pressure relative to the optimal for generally lateral. 30psi is low pressure for a road tire and high pressure for a slick.

[@tozkal96]

@@ArchOfficial yes exactly what i tried to say but i only spoke stricktly from a street tire perspective since i don't have much experience with slicks.

[@Dyils]

Lower tire pressure DOES cause more heat. But we're talking about lower starting pressure. Of course more heat also increases pressure. But if you had less to start with, there's less to increase. As someone else pointed out, both chat and Jarno are correct, they are talking about different things.

[@sethv5273]

If you increase the pressure, the tyres start to feel nervous and start to sweat more which cools them down and lowers the temperature. Not hard to figure out

[@alecmillea4539]

I believe this is a miscommunication and Jarnos question to the F1 engineer was also misunderstood. Higher tire pressures generally produce less heat compared to lower tire pressures. Here's why: Deformation and Flexing: At lower tire pressures, the tire deforms more as it rolls, causing increased flexing in the tire's sidewalls and tread. This flexing generates more heat due to the continuous bending and unbending of the tire materials. Rolling Resistance: Lower tire pressures increase rolling resistance, which means the engine has to work harder to move the vehicle. This increased effort translates to more heat being generated within the tire. Contact patch Lower pressures result in a larger contact patch, which can increase friction and consequently heat generation. Higher pressures reduce the contact patch, decreasing friction and heat build up. I believe Jarno and the F1 engineer must be referring to fact that as a tire heats up the temperatures increase. This is just the basic physics of both sides of the argument.

[@PN8]

"as a tire heats up the temperatures increase" I think everyone can agree on that one mate 🤣

[@alecmillea4539]

@@PN8 lol oops 😅. Of course I meant to say that as a tire heats up its *pressure* increases. The same air volume at a higher temperature will be higher pressure.

[@inebium]

What Jarno and the F1 engineer are referring to is that if temperature is lower (as in the track/weather temperature) then you increase tire pressure because thanks to it they will be hotter (more grip) and when the temperature is higher (as in the track/weather temperature) then you decrease tire pressures. From what I understood from the video, in F1 2024 it is the opposite and so it is wrong.

[@timb.4617]

About the Drying track with slicks, ain’t it like that: First the tires drop off in Temp and pressure and as the track gets dryer it starts to rise again? At least that’s what I experienced in ACC when I get out either slicks (ofc not reallife).

[@FailedRacers]

High heat makes high pressure, but low pressure makes high heat.

[@IgnitionP]

In conclusion, all is high

[@DiabolicalBiscuit]

the issue is i've also had issues with tyre temps when i raise the pressure too, games clapped

[@pondracek]

If you're using up more tyre by losing traction at a higher pressure, this can also be accurate, as sliding 'burns' more rubber to friction which creates more heat. But if you're churning out equally clean laps, you'd expect the higher pressure to have less heating from rolling resistance and deformation. Paradoxically, the higher temps of a lower pressure will end up heating the tube to about the same final pressure. You'll just have warmer rubber when you get there. (Unless, as above, the higher pressure is causing you to lose traction either via less suspension cushioning or just a smaller contact patch.)

[@blockytofu]

lower tire pressures do increase the contact patch with the ground, resulting in more heat, but this is very very minimal, most of the heat is caused by sidewall flexing instead and other tools should be used to influence the temps (i might be egregiously wrong)

[@ArchOfficial]

Tires don't just have one temperature, the surface, carcass and core all heat at different rates and are influenced by different parameters. Most of the heat is definitely caused by surface temp transferring to carcass transferring to core.

[@TiagoMorbusSa]

the answer is simple: if you run your tire pressure within the intended pressure window, higher pressure will allow you to keep more heat in the tire, due to the reduced capacity the tire has of absorbing bumps. The high temperature will be core temperature. HOWEVER if you run the tire pressure BELOW the designed pressure window, you will ALSO overheat your tire because of the rubber deformation, which is is carcass temperature, and generally doesn't matter for race tires because rubber deformation can't really warm up the tires much more than 60 or 70 degrees at the worst cases.

[@calypso2niner]

I thought I was losing my mind last night trying to adjust the pressures. Then I saw this video.

[@callejarvholm]

With less pressure, the rubber moves more, heating it quicker. The air inside the tyre is a different story, but in practice, the tires heat up quicker with lower pressures. Softer compunds move more, which heats them up quicker, same principle.

[@OCinneide]

I think the heating then leads to more pressure in the tyres.

[@therealf.b.i9468]

​@@OCinneideexactly

[@marktucker208]

I ran 5 laps at Misano on ACC and on the lowest tyre pressure it was 10 degrees hotter than my normal setup & with the highest pressure it was 11 degrees cooler. All measured at the same point on track, same track temperature The higher pressure setting also gained less pressure over the 5 laps than the low pressure tyre but it was undriveable, 6 seconds slower per lap. Obviously those are taking the pressure to the extremes. From real world experience within motorsport we didn’t really try to resolve tyre heating issues with tyre pressure we focused on dealing with setup/balance issues that were causing the overheating. I feel like sims are quite poor at replicating tire pressure and its effects over a stint.

[@lewis8552]

Both are right. Its just the reasons why are different. Its pretty much the difference of surface vs internal temps. General rule of thumb though. Higher should always mean higher temps. Lower is when its a combination of factors

[@jeff4r533]

As a valorant player, I too can confirm that temps go high when pressure is low

[@Henrix1998]

I tried to google this but I can find both opinions about irl racing

[@pasztorferenc6741]

I don't know the truth but on lower pressures the tyre has more contact patch with the ground, more friction, which results in higher grip and that means you can corner at higher speed, so more friction (until rhe limit) Otherwise higher pressures decrease the contact patch, so less heat from the friction, but according of the universal gas law higher pressure results in higher temperature Also I don't think tyre wear influate the pressure, only harder to build the temp, because of the worn tyre In rain I would run on lower pressure to get more contact surface with the track

[@Shefinanigans]

I’m not a professional when it comes to setup yet since I’m currently prioritizing driving technique but according to what I’ve understood the lower the pressure the quicker the tires warm up but the temperature it warms up to should be lower than on high pressure tires which heat up less quickly but with a higher total temperature sometimes because lower pressure heats up quicker it may reach a temperature beyond its operating limit too quickly leading to overheating and leading people to believe that lower tire pressure will lead to a higher tire temp Jarno if you’re reading this please tell me if I’m right and correct me if I’m wrong I’d love to know

[@Nascarfan35]

this is why content creators, fans, and esports drivers should never have any input in development of racing games, it should only be the people who actually are involved in the industry; the engineers, the drivers, the analysts...etc

[@fernandorecio118]

higher/lower ambient temp = higher/lower pressure you always want to stay in the tyre optimal range, if you increase or lower the pressure on the setup is to accomodate to the ambient temperature if for example the optimal tyre range is 27 PSI, you will want to adjust the pressures in the box so it always stay at that range (after going on track you will start cornering, the temperature of the tyre will increase, and the pressure will also increase) if the temperature drops, the pressure will drop, so you will have to increase the pressure to accomodate to that change. i'm not an irl racer or tyre expert so i'm welcome to people telling me i'm wrong

[@jaylenmiller428]

It seems that Jarno argument that higher pressure in the tyre equals higher temperature is rooted in the basic principle that compressing a gas (like air) increases its temperature. However, in the context of F1 tyres, this isn't the whole story. On the other hand, Chat been taught that lower tyre pressure increases tyre temperature because of the larger contact patch with the road. This is also true, but it's not the full picture either. In reality, the relationship between tyre pressure, temperature, and performance is more complex. Higher tyre pressures can indeed lead to higher temperatures due to the increased air compression. However, this can also reduce the contact patch with the road, potentially leading to less grip. Conversely, lower tyre pressures can increase the contact patch, providing more grip. However, this can also lead to higher temperatures due to increased friction with the road. So, who's right? Well, in a way, both of you are!

[@lamotodeltubo]

looking at the comment section it's crazy that people nowadays takes what an influencer says as pure gold, even when he tries to oversimplify a complex thing...love Jarno but this time he was behaving like a 5 years old 🤣🤣

[@nielspeelen5748]

You do know he actually raced in F4 right? He has actual real-life experience of having to deal with tyre pressure

[@lamotodeltubo]

@@nielspeelen5748 you know he is still reducing a very complex matter to a single parameter

[@GearzMonkey]

Tyre temps depend on the rubber compound and sidewall strength - if you’re overheating the outer edges of tyre, pressures are too low, if the middle overheats, pressures are too high. Running pressures too low or too high decreases the surface area in contact with the road, which causes overheating. With that being said, seeing that tyre pressure increases with temperature, it’s better to start with low pressure because the tyre will heat up, causing the pressure to increase. So unless your tyre has infinite stiffness, low pressures are less likely to cause overheating than high pressures. In summary, use temperature to guide what tyre pressure to use, not the other way around. On a cold or drying track, temps are low, so your tyre won’t heat up as much. Therefore, you can use higher starting pressures. If track temps are high, a lower starting pressure will help you run at optimal pressures, but you have to be gentle and not aggressive to avoid overheating the surface while bringing the tyre to temp.

[@AleksisA88]

yep, jarno completely lacks nuance in this regard. Tyres have pressure and temperature windows. Rules of thumb for pressure and temperature relationships are only really applicable within certain windows. Within a racing slick operating window: higher pressure typically leads to less temp, and vice versa. But for context, a racing slick operating window can be a couple psi.

[@GearzMonkey]

@@AleksisA88Yes, tyres (especially slicks) have an operating window. But higher pressures do indeed lead to increasing temperatures (which then lead to a further increase in pressure). However, a higher tyre pressure will take longer to warm up, but it's heat will not dissipate. Lower tyre pressures have quicker tyre warm up, but the heat dissipates quicker, which leads to a decrease in temperature.

[@CoachTrixxR6]

okay but what i don't get then and please somebody inform me is for say a dragster. Drag cars run low tyre pressure because when they actually accelerate the tyre heats up and expands so shouldn't lower tyre temps produce more heat or am I just confused.

[@AleksisA88]

Dragsters are a completely different discussion. dragsters have high deformation for higher slip angles, and nothing to do with temperature. Tyres typically have an optimum pressure window for a given tyre loading. Going up in pressure, but within the window has lower tyre temperatures, and going down in pressure has higher temps. That is because of increased tyre friction at lower pressures. Inversions in this relationship can happen outside the pressure window, but the cost of being outside the window should far outweigh temperature considerations. Rules of thumb for pressure and temperature relationships are only really applicable within certain windows. But for context, a racing slick operating window can be a couple psi.

[@EthanDean57]

Dragster tyres expand due to sheer centrifugal force, like when you've got an RC monster truck pinned and the tyres become like plates. Those cars are absolutely mortifying.

[@IsakPersson17]

F1 23 says "Increased tire pressure also contributes to higher tire temperature". F1 24 says "Lower tire pressure also contributes to higher tire temperature" Lol

[@GPitstra37]

Yeah it is a weird discussion. Because both sides are kind of correct. Let's say we run higher pressures in the tires. This means that on straights there is less rolling resistence and smaller contact patch meaning the wind hitting the tires is WAY more than when you go 3 KPH slower with lower pressures.. (and yes even with less drag. The drag profile of the car can change but the tire drag stays the same) this is because wind resistence goes up exponentially at increasing top speeds. This cools the tires more on higher pressures. However. When going through a high load corner. There is more energy going through the tire because the tire resists more to the weight of the car deflating that tire and increasing pressure and temprature, however because the tire is harder the air inside gets squeezed less this would decrease the increase of pressure. Where as Lower pressures in high load corners have more stretching in them moving around more energy. (But the increased deflating of the tire gets the air inside the tire more compressed. But this is not a big difference since there is less air to compress, this would mean depending on corner how much the tire deflates compared to higher pressures a very very high load corner might increase a lower pressure tire temp jist that bit more. Because it can handle the deflation more. A higher pressure tire would lose grip and start scraping over the surface this would also increase temp but not in a good way it would also xause massive tire wear) While the larger contact patch also could count for the heat to be easier removed out of the tires on straights into the track. But in this case. The wind with a higher top speed with higher pressures outweights the the larger contact patch and heat leaving the tires through the tires onto the track. (Wind cooling at top speed > larger contact patch heat loss) Lower tire pressures should i think cause more tire wear too. Because you can use the tires a lot more. While higher pressures save the tires more because they can handle higher loads but they provide less grip. Causing more friction when you over push them. Also running a lower pressure on the rear tires not only increases the rolling resistence but also resistence on the engine. The engine has to work a slightly bit harder to push the car to the same top speed as with higher tire pressures. This would cause more fuel or energy usage. And because now we are on the topic of the rear tires. The powertrain also pushes more load on the rear tires making it harder for them to cool off with lower pressures. This just turned into a whole bible but i get where both sides are coming from. Yes i might not be a Formula 1 engineer but i am a mechanic at BMW and do know a thing or 2 about these things. Anyways this is all i could think of for now.. i do get why the developers of the game came up with this. There are arguments for both sides. But the right awnser is for different scenarios. Feel free to respond down below for questions or if you think differently about it. Opinions are welcome.

[@GPitstra37]

PS i forgot 1 thing. F1 tires are filled with Nitrogen making them less responsive to higher pressure = higher temps.

[@DrQuestern]

I think Jarno almost cried at the end of this argument

[@sinimrocky9717]

I'm not gonna try arguing with someone who actually raced real race cars, but why doesn't he simply explain why? I always thought (and have been taught that in driving school) that lower tyre pressure leads to more flexing of the rubber and thus a higher contact patch and more friction, thus higher temperature. Obviously when an engineer and a racing driver say that's wrong it's wrong but can someone explain why?

[@salmaofinlandes6793]

@@WigSplitters The "T" in the equation is referring to the gas inside the tyre. And the temperature in the game is (probably) the surface of the tyre. It's true that a lower pressure will result in a lower T of the air inside the tyre but it will also increase thr friction with the outside of the tyre leading to higher outer temperature.

[@WigSplitters]

@@salmaofinlandes6793 yeah imma retract my statement because the topic isnt really dependent fully on gas laws, there are many other factors so i cant really argue the pressure of the tires' external rubber is proportional to the internal gas temperature

[@salmaofinlandes6793]

@@WigSplitters Tbh there are a lot of different opinions on this matter even among irl racing drivers. The only thing I'm certain is that the reaction from Jarnoo acting like this is some very simple subject is a bit arrogant.

[@deathtrooper2048]

This isn't the first time about Jarno had been wrong about something, he thought a guy racing in the F1 game was cheating, but it turns he was just faster. (6 seconds faster on LAN).

[@WigSplitters]

@@deathtrooper2048 he's not inherently wrong, but he acts as if he's completely right

[@CROWNZI]

So i think that ppl dont understand the difference between core temperature and surface temperature. The question that Jarno ask did not imply which temperatures are we talking about, and what the Engineer answered was the core temperature which i think nobody questions here, it is obvious that more pressure means there is more HEAT but THAT IS ONLY IN THE CORE. The thing that makes the tyres DROP OFF or OVERHEAT is THE SURFACE temperature. The surface of the tyre does deflate ALOT faster and prone to temperature change ALOT easier than the core temps. A few things that affects the surface temps alot are the 1. Contact Area(if you have any sort of toe or angle like you have in drift cars ALL OF THE WEIGHT OF THE CAR WILL BE ON A SMALL SURFACE AREA OF THE TYRE SO IT WILL OVERHEAT ALOT MORE AND DEGRADE FASTER) 2. Track temperature - this one is self explanatory 3. Traction which i think is the key one as you will be getting alot more heat into the surface if you are sliding(creating friction which we know can create fire if you scratch 1-2 wooden sticks fast enough into the wood plank). There is no such thing as lower pressures - lower surface temps or higher pressure higher surface temps, you gotta understand the traction and what are the pressure windows for perfect traction so you dont slide and have perfect amount of surface contact area. Depending on the cars and their specific needs, you will see completely different working range. So INSIDE that range you have low pressures and high pressures, but those wont mean LITERALLY high or low, it is high or low INSIDE the RANGE that fits the specific car. for GT3s it will be 27ish PSI for GT4 it will be lower etc. As you can see in the end Jarno goes into THE LOWEST pressure settings and that makes him lose the grip which is why the surface temperatures were going into the RED zone because he was SLIDING.

[@WyFoster]

The tire pressure is to maximize the contact patch of the tire for a given load. Not for tire temperature. tire temperature varies greatly with ambient conditions (temperature, track temp, overcast, sunny, wet, etc) not tire pressure.

[@AleksisA88]

finally someone that gets it. my reaction to him roasting the guy telling him why you run higher pressure in the wet lmao. so arrogant.

[@mastersquidf1382]

I can understand the confusion though, it’s not an intuitive concept

[@2_st0ned70]

yall come back to f1 23 so we got full lobbies again lol

[@xmtsmtsx]

Guys both answers are correct, lower tyre pressure causes larger deformation of the tyre and an increase in friction generated between the tarmac and the tyre, obviously increasing tyre temperature. However, this increase in temperature causes the gas inside the tyre to expand, increasing the tyre pressure, which is why you would have the run on effect. This is the reason drag racers run their tyres at such low pressures, the engine is capable of deforming the tyre more and creating more surface area in contact with the tarmac, therefore increasing grip, increasing friction and increasing temperature. We're arguing past each other here.

[@ArchOfficial]

Chicken and egg. The drag tires are soft enough *to be* deformed enough at a low enough pressure to make extremely low longitudinal optimals possible. Usually it's about 15psi for typical tires.

[@damiyoflapies8473]

pressure * vol = n(no of moles)* temp * R (boltzmann cons) assuming vol, n, and R are constant pressure proportional to temp... this is so elementary

[@AleksisA88]

Except in this case, the two different tyres don't have the same pressure, volume, no of moles, and also energy is not conserved in the tyre. Maybe not so elementary after all....

[@damiyoflapies8473]

@@AleksisA88 But the general trend is that if u have higher pressure u will have higher temperature

[@nightmarevs]

@@damiyoflapies8473 That does not contradict the statement in the game. It says lower starting pressure => higher temp (faster), which is true as e.g. more contact space means more friction therefore more heat generated. If the tire gets hotter the pressure will increase that is also true at the same time. So the chain of events would be: low pressure => heats up fast => higher pressure at high temp.

[@VladKov36]

devs pushing misconception is just,,,

[@CockMcBallsddd]

Its incredible. Its impressively stupid.

[@WigSplitters]

its not a misconception, its a convoluted topic and there isn't really a right answer because you can intemperate the statement in a variety of ways

[@tomekporadziszf1]

Jarno is 100% right here, a lower tyre pressure means the air inside has a higher volume which leads to a larger contact patch between the tyre and the track. Since there's a larger surface of the tyre in contact with the asphalt, the same amount of load (heat) can spread around a larger surface, leading to an overall lower tyre temperature. It's worked correctly for the past 6 games and was broken only just now (as far as I can tell). This is also why excessive amounts of camber lead to the tyres gaining a lot of heat on the straights - the surface of the tyre touching the ground becomes smaller, therefore the same load is compacted into a smaller space, causing a higher tyre temperature.

[@GPitstra37]

I want to add this to it.. yes the heat might leave the tire more on straights due to the larger contact patch.. but if you would run a higher pressure. This would also mean less resistence because of that contact patch being smaller. Increasing the top speed means there is more wind flowing over and along the tires. And what i learned. Wind resistence grows exponentially when increasing top speed. I could argue that because the wind is blowing harder the air of that wind takes away way more heat than that contact patch would. Because the wind resistence growing exponentially while the contact patch can't be increased as high as there is air cooling the tires at higher top speeds. It is a weird discussion because i think both sides are right.. just in different scenarios. I think Jarno is right at low speed/load tracks. And chat and the game is right at high speed/tire load tracks. It all depends on the scenario.

[@ArchOfficial]

Below lateral optimal pressure produces a higher contact patch pressure which will heat the contact patch unevenly, spiking the temps at some points of the tire, although there's a good chance it'll produce overall less carcass heating. It won't increase your contact patch area either, but rather decrease it effectively. It does increase it longitudinally, but only if the car isn't rolling. If it's rolling and especially if it's near optimal slip then there's an optimal pressure too, which is generally lower than the lateral one.

[@AleksisA88]

Jarno is not 100% wrong here, but mostly wrong, owing to the lack of nuance. Tyres typically have an optimum pressure window for a given tyre loading. Going up in pressure, but within the window has lower tyre temperatures, and going down in pressure has higher temps. That is because of increased tyre friction at lower pressures. Inversions in this relationship can happen outside the pressure window, but the cost of being outside the window should far outweigh temperature considerations, hence why the comment "you run higher pressure in the wet for pressure, not temperature" is absolutely correct, and jarno's dismissive attitude is very misplaced. Your comment and explanation is very misleading, because you reference using tyres outside of their pressure/camber window. Rules of thumb for pressure and temperature relationships are only really applicable within certain windows. But for context, a racing slick operating window can be a couple psi. Optimum camber is not about overall temperature, but over temperature distribution over the tyre's lateral direction. Different compounds and tyre loadings are going to have different optimum camber levels. This effect does not only apply to straights. Note: the outside of an overcambered tyre will also run far cooler too. If higher camber results in higher overall temperature depends on the tyre compound, ambient air temperature, airspeed, and aero. Crucially, it relies on whether the outside of the tyre can dissipate heat faster than the inside of the tyre can both generate heat, but also distribute it to the outside of the tyre.

[@ArchOfficial]

@@AleksisA88 Pressure is extremely camber and load sensitive, and it's different for lateral and longitudinal. You're mostly caring about lateral for circuit driving, but longitudinal is highly relevant for things like drifting, rally and obviously drag. I would not agree that lower temperature within the operating window (If such a thing even exists, it arguably doesn't at a micro scale. Pressure relationship is highly nonlinear and NOT a smooth curve. You can go lower from optimum and lose grip, but then go lower again and gain grip, then go lower again and lose grip etc. Of course there is a range where it's flat-ish and not all tires are flat-ish) produces higher friction and thus higher temps, maybe at a minor level, I'd more argue that different parts of the tire will heat up more or less relative to others rather. It's honestly far too complicated to even try to simulate in a consumer simulation in any way other than "optimal is optimal, going away from optimal is less grip" + some simple effects like RR or saturation peak. Physical tire models might have a better chance, but it's not gonna be correct.

[@AleksisA88]

@@ArchOfficial "If such a thing even exists, it arguably doesn't at a micro scale." at a macro scale it doesn't, at a micro scale, it definitely does. The window for racing slicks is going to be very small (within a couple psi). Within this window some linearisation is definitely viable. It depends on what scale we are talking about. If we are talking about the totality of pressures physically possible, then yes I totally agree with you: it's highly non-linear. Also adding to the fact that the loading the car can actually apply to said tyre, is defined by the tyre properties themselves, hence they are coupled, complicating things further. "I'd more argue that different parts of the tire will heat up more or less relative to others rather." for camber yes, for pressure, if within the window, not really. The deflection of the tyre within a couple of psi is going to be very small compared to the multiple degrees of camber a racecar would have.

[@CraigConlee]

It seems like codemasters reset their IQ year single year.

[@slowaccord]

cant wait to see the comments on this one lol

[@x2Jurassic]

I swear chat shares exactly one brain cell

[@ManOfPillowDoom]

Its insane how arrogant you are half the time and how quickly you mold when someone disagrees with you.

[@WigSplitters]

especially on this topic where, the answer really isn't as simple as the ideal gas laws as he implies

[@ManOfPillowDoom]

@@WigSplitters yep

[@imjustgood9596]

The more you know ⭐

[@scott4207]

Higher pressure = higher temperature. It’s as simple as that.

[@BYJON95]

The thing is Codemasters change that F123=Lower pressure less overheating F124=Lower pressure overheating That's why Jarno is not understanding

[@footballshowItaly]

Just to clarify: • yes, pv=nRt is the *ideal* gas law. We know it. We also know that air at reasonable temperatures can be well approximated by an ideal gas. • yes, this formula refers to the inner temperature, not the contact temperature of the rubber with the asphalt. • no, lowering a bit the tire pressure doesn’t mean it will be completely defleated and all of a sudden will generate an insane amount of heat. The increase in contact surface is not that big • but yes, the contact surface will probably have a slightly higher temperature. • Every tire has an optimal range of utilization and it’s difficult to predict its behavior even for the f1 engineers themselves! The game is trying to mimic a complicated world with a simple model, running on a basic hardware/software (it has to in order to be used by the majority of people). Even said that, this is just theory. If an actual driver and an actual engineer tell you how things work, just believe them. And source: i’m an engineer and gokart driver!

[@ArchOfficial]

The contact patch pressure will go up if you lower pressures too far, which is the primary reason for slight overheating of the surface in corners. You're getting effectively a smaller surface area. It's a bit different for longitudinal but mostly the same.

[@AleksisA88]

Jarno is not 100% wrong here, but mostly wrong, owing to the lack of nuance. Tyres typically have an optimum pressure window for a given tyre loading. Going up in pressure, but within the window has lower tyre temperatures, and going down in pressure has higher temps. That is because of increased tyre friction at lower pressures. Inversions in this relationship can happen outside the pressure window, but the cost of being outside the window should far outweigh temperature considerations. Hence why the comment "you run higher pressure in the wet for pressure, not temperature" is absolutely correct, and jarno's dismissive attitude is very misplaced. Jarno asked a completely different question to the f1 engineer than the question at hand. Higher pressure, given a fixed mass and volume of gas will lead to a higher temperature, if energy within the system is conserved, hence the answer the f1 engineer gave. However, that was not the actual question. The actual question was: will tyre temps be higher over the course of a lap, if I run a lower pressure? Despite what I wrote above, the answer is actually not that simple. Why? because of vehicle dynamics. If the tyre properties change, so does the tyre loading, hence it's almost impossible to compare temperature effects of pressure on an actual car, as opposed to a test bench.

[@CapoMasi]

FINALLY. I AM VALIDATED. PV=nRT.. I said this in a sim racing community and they tried to rationalize to me this EA Codie’s garbage.

[@thomas.bachmann]

Exactly, the gas equation. Dont get confused by stupid people.

[@JubbatheHatt]

I know more about racing than you’ve had hot dinners

[@chrizz6485]

One question, did your chat went to school xD

[@Rafael_Tsolakidis]

All in all, EA has binned it AGAIN.

[@alexnotlando]

if the sidewall of the tires are flexing more, they aren't gonna be breaking traction as much, and will therefore gain less heat. sure, you'll heat up the sidewall a bit more, but you'll lose the extra heat you get from putting in extra pressure to start with

[@Harmonic14]

It's not so much the side wall as it is the carcass. Surface temp and carcass temp are two different things

[@alexnotlando]

@@Harmonic14 yeah, i get that, but heating the sidewall is gonna have less effect on the carcass temp than heating the outside surface of the tire

[@That_Guy_Nick]

Guys there is differences between road vehicles and racing vehicles... come on

[@bryant.p1215]

and they both still have to follow physics.

[@nicolasoliveira4903]

​@@bryant.p1215 Based on my road car, Low pressures make the entire wheel hotter, even the rim. I don't know if a racer tire has this same effect. It also heats up faster.

[@zgthor]

isnt lower tyre pressure higher temp due to a lower amount of particles inside, thus the same amount of energy would equate to higher temperature in a lower pressure enviroment than a higher one, for example a co2 cylinder that wen you break it and the pressure goes all out, the cylinder gets freazing cold?

[@kf5058]

Just to point out to commenters to stop using ideal gas law because we are talking about the tyre surface temps and not the temps of the air inside. and to add to it, we are not increasing pressure directly, we are increasing 'n' which is the amount of air in the tire. if you look at the formula (PV=nRT), we increase 'n' which causes 'P' in increase, nowhere here does T changes. The reason for the difference in temperature fluctuations is in the tyre's interaction with the asphalt which you can check tomek's comment for the explanation.

[@AleksisA88]

tomek's explanation is very misleading, because he references using tyres outside of their pressure/camber window. Tyres have pressure and temperature windows. Rules of thumb for pressure and temperature relationships are only really applicable within certain windows. Within a racing slick operating window: higher pressure typically leads to less temp, and vice versa. But for context, a racing slick operating window can be a couple psi.

[@LongTimeAgoNL]

Like, with standard road tyres and sport tyres for sports cars, it is correct that lower temps cause more friction and heat in the long run.. But F1 tyres work differently and they completely screwed up. God dang.

[@elliotbulley1849]

Drag a flat tyre (for zero pressure and god tier tyre deformation) over tarmac. 1) What carcass temp do you get? 😅 2) what core temp do you get? 🤔 3) what happens to your tyre pressure 😂 Wrong answers only please!

[@AleksisA88]

Dragsters are a completely different discussion. dragsters have high deformation for higher slip angles, and nothing to do with temperature. Road racing tyres typically have an optimum pressure window for a given tyre loading. Going up in pressure, but within the window has lower tyre temperatures, and going down in pressure has higher temps. That is because of increased tyre friction at lower pressures. Inversions in this relationship can happen outside the pressure window, but the cost of being outside the window should far outweigh temperature considerations. Rules of thumb for pressure and temperature relationships are only really applicable within certain windows. But for context, a racing slick operating window can be a couple psi.

[@elliotbulley1849]

@@AleksisA88 😂 I didn’t mean dragster. I just said drag as in…. Ah never mind!

[@parnoojmeer5970]

function别看了

[@4527PENK]

I just wanna play F1 23... 24 is real shit I dont know if EA would add old f1 cars though like a.. Ferrari f2012 or mp4/4 ?

[@DriveRams]

probs not as they would be boasting about it from day 1 best bet would be f12020 or asserto corsa w/ mods

[@doubleboy2388]

The new game is soooo bad I hate it. And I've been driving almost everyday since 2019

[@davidkolbinger2542]

Its funny how many people think the tire temperature is strictly influenced by pressure. The tire compound, the way your car is using the tires, the compound of asphalt, etc can all influence how the temperature in the tire is. I think what jarnos means, is that if you have the same track and you put in more pressure, more molecules will bounce of each other with results in the basic form of heat and therefore the temp in the tire and on the surface will increase. So if you running low on tire temps you shoud increase the tire pressure. Thats the normal way to do it in most formula series. I dont how how the do it in othere series. But for example on a track where the grip is unlimited like on a drack strip you want the tires to be hot and flat at the same time. So what you do is reduce tire pressure snd work with the friction that the asphalt provides or the breaks. And the game is a little version of the complex physics that influence the tire pressure/temp in real life. In the end and thats the most important part in my opinion, its allways the goal to be faster. And each day, teack, tire and car is different so their could be a possibility were reducing the pressure could give you a slight improvement in rubber touching the ground, which. This can result in more grip out of the corner and if this is on a track were we find a lot of traction zones, results in a slightly higher temp strickly on the surface and therfoe more grip. If you put in pire pressure you could have more temp but also less rubber touching the ground, what makes you slower. This disscussion was nonsense because both ways can influence tire pressure. One is the normal way of regulation it and the other one is just a diffrent approch to get the most out of the tire for a specific track. If you talk about just the straight forward way, imo jarno is right

[@davidkolbinger2542]

Feel free to correct me but I feel like the two sides just missed the other ones points and thought maybe their way is the only right way. Like with most things in physics, there is a simple way which works for most scenarios but if you start looking more closely you can find ways to get more or less the same end result in a different way.

[@JubbatheHatt]

Bro you know this is a game right?😂 Devs make the rules not you but i will add Pirelli do not let you run tyre pressures below 25psi in the real world so maybe devs made it like the real world so you CANNOT GO BELOW 25 PSI now go and have a think about your annoyance bro 😂😂😂sheesh

[@itsokaytobeaselfhatingjew5971]

Chat thinks low means deflated...but low in this example is still a high pressure.

[@CockMcBallsddd]

I do think that's part of the problem. They are thinking lower pressure like you use in the snow to double the contact patch. That's not happening. . .the contact patch is changing by a millimeter or two with the pressure we're talking about.

[@AleksisA88]

in that case, he is even more wrong.

[@itsokaytobeaselfhatingjew5971]

@@AleksisA88 No lol, increasing the pressure will reduce surface area, as the tire becomes more round. Putting the same energy on a smaller surface...will increase temp.

[@sebastiandierks7919]

I'm sorry but it's a dumb video. It's a very complicated topic somewhere between mechanics, thermodynamics, non-equilibrium physics, engineering and real-life effects. Shouting at people and calling them dumb was completely unnecessary. There could have been an interesting discussion about the science and engineering instead. There are arguments for both sides and finding out what effect is the most relevant is hard. Maybe the end result is clear to you due to your experience in racing, but I am a physicist and life-long formula 1 fan and would not have known and after thinking about it for a bit since it is apparently so obvious, I still don't know. People argue with the ideal gas law, but it doesn't really apply as the tires are not in thermal equilibrium. All sorts of effects play a role: rolling friction on straights, different cornering ability due to a different contact area puts different amounts of energy into the tires, tire degredation changes the situation throughout the stint. Googling also shows arguments for both opinions. It's really not as easy as you make it sound.

[@WigSplitters]

finally a guy who isnt trying to make himself feel better by putting other people down, if you play a sim like ACC which probably does do a very good job at trying to simulate a lot of those factors, that effect tire temp/pressures, you mention. you immediately see that its not as simple as the ideal gas laws.

[@mikemiller7946]

An interesting science and engineering conversation between a sim racer/streamer, and twitch chat? You are asking for too much tbh. Also its a little funny you judge the way he is talking to people in chat, but you don't see the way people are talking to him. These streamer tend to go for long hours and deal with less than smart people all day. Its easy to comment that it could have been more... when in reality it really could not have been.

[@AleksisA88]

former vehicle dyamics engineer here: Jarno is not 100% wrong here, but mostly wrong, owing to the lack of nuance. Tyres typically have an optimum pressure window for a given tyre loading. Going up in pressure, but within the window has lower tyre temperatures, and going down in pressure has higher temps. That is because of increased tyre friction at lower pressures. Inversions in this relationship can happen outside the pressure window, but the cost of being outside the window should far outweigh temperature considerations. Hence why the comment "you run higher pressure in the wet for pressure, not temperature" is absolutely correct, and jarno's dismissive attitude is very misplaced. Rules of thumb for pressure and temperature relationships are only really applicable within certain windows. But for context, a racing slick operating window can be a couple psi. Jarno asked a completely different question to the f1 engineer than the question at hand. Higher pressure, given a fixed mass and volume of gas will lead to a higher temperature, if energy within the system is conserved, hence the answer the f1 engineer gave. However, that was not the actual question. The actual question was: will tyre temps be higher over the course of a lap, if I run a lower pressure? Despite what I wrote above, the answer is actually not that simple. Why? because of vehicle dynamics. If the tyre properties change, so does the tyre loading, hence it's almost impossible to compare temperature effects of pressure on an actual car, as opposed to a test bench.

[@kalle46]

imagine arguing with an ex formula renault driver what happens when you change tire pressures

[@AleksisA88]

Imagine relying on the knowledge base of a 17 year old athlete with a complete lack of nuance on the topic.

[@Timothymukansi]

PV = nRT This is the ideal gas law. So T = (PV) / (nR). So if you increase Pressure, you should get more temperature inside your tyre. Additionally, when pressure is higher, more of the rubber makes contact with the track surface, resulting in more friction, thus higher rolling resistance. This will add more temperature, and also compresses the gas inside the tyre, further increasing the temperature.

[@XavierHipolito]

With higher tire pressure less rubber makes contact. More pressure less rolling resistance, less pressure more grip

[@kf5058]

your use of ideal gas law is wrong here

[@bryant.p1215]

while this is correct this is literally ideal gas law in an ideal world this is how it works. we are in the real world where nothing is ideal nothing at all. so while this applies its only to a certain point

[@Timothymukansi]

@@XavierHipolito that is not true. With low tyre pressures, the carcass of the tyre caves inward into the tyre resulting in less contact with the track and thus less heat on the tyre.

[@Timothymukansi]

@@bryant.p1215 I think you fail to understand that a "realistic" deviation from the ideal gas law would still retain the proportionality of the variables. You are supposing that temperature and pressure become disproportionate in realistic situation, which is an uneducated man's understanding of science.

[@hminh8166]

guys i failed physics at school can someone explain this to me in football terms

[@Timothymukansi]

If you have 2 footballers on a pitch, how likely are you to smell body odour? Now increase the number of players to 100. How likely are you to now smell body odour? The number of players on the pitch represents pressure, and odour intensity is temperature. The higher the pressure, the higher the odour intensity.

[@danieldorn9989]

@@Timothymukansi But the question is not about the odour intensity, but about the odour quality? And this depends on nutrition. So what did these football players eat? Are they american? Then the odour will be bad. McDonalds food makes you stink. But because these american football players (aka soccer) are playing badly, they dont earn enough money to get McDonalds food. Now there is less demand, which is the reason for the higher fast food prices.

[@evanroccatani5492]

My left front was 70% after 4 laps at Qatar wow

[@mrphoenix798]

I got a puncture after like 6 7 laps. This game is a unique kind of funky

[@danieldorn9989]

@@mrphoenix798 its not a game its a torture software

[@ixit9763]

So I actually do understand people who think of it that way because it's the case with road cars, with tyres much softer and that are made for lower pressure and temperature, with road tyres, you do increase temps if your tyres are low on pressure because the rubber moves a lot more, and you increase the wear tyres by a lot which means you risk punctures. On race cars it's very different because the pressures, temps and forces applied to the tyres are on an other level, and the tyres are very different as well, the rubber is more hard, the structure of the tyre more resistant ect ect, that's why on race car lower pressure = lower temps and vice versa.

[@ArchOfficial]

Road tires are harder and designed for higher pressures.

[@ixit9763]

@@ArchOfficial what the hell are you smoking

[@ixit9763]

@@ArchOfficial Once, do a quick search, f1 rubbers are way way more hard, they just become soft because of the temperature, and 2, in an f1 tyres when the tyres are cold there's half the pressure of a road car tyre, so when the tyre hits 100⁰C, the pressure is higher than on a road car

[@ArchOfficial]

@@ixit9763 Do a quick search? Does a decade+ in realtime models count?

[@Harmonic14]

Lower pressures generate more heat than high pressures. Racing tires being different than road tires doesn't change that

[@kunalpatel5]

This Game 🤣🤣🤣🤣😭😭. Honestly tho, how did people think lower pressure means higher Temp???? It is 9th grade physics man. PV=nRT Where P is pressure, V is volume and T is temperature. n,R are constants. Pressure is proportional to temperature in a closed vessel of fixed volume (i.e. constant volume).

[@WigSplitters]

i dont think people generally think like that, they generally mean that a tire with lower pressure can heat to its 'maximum' temp quicker relative to the higher pressure tire, which is where this misconception stems from

[@Essence1123]

This is not about the temperature of the gas, ofc that mostly follows the ideal gas law. This is about the effect of pressure on the rubber of the tire which in turn effects pressure. At a lower starting pressure the tire is less full and thus flexes more and has more friction. That extra flexing and friction causes the rubber to get hotter faster which increases gas temperature/pressure as you're aware. HOWEVER if you start at a higher pressure the rubber does not bend as much and has less friction this means *the rubber* (aka the important part) does not heat up as much and stays cooler. Also you can have the exact same temperature but different pressures, the tire just inflates more or less (which is the whole point of changing pressure in tires)

[@deathtrooper2048]

Lower tire pressure = more grip = more friction = more heat.

[@JayS1622]

That’s why you don’t listen to people you don’t know in a twitch chat room.. 😂

[@ewanofscotland]

PV=nRT. The end.

[@EJ0107]

Codemasters are in the mud😂

[@jpbonj3593]

Jarno Opmeer is always wining. I suggest he gives me the same sponsored (free) Fanatec gear and rig and we can all do better. All the rest is showing off.

[@huutonauris]

lmao

[@annekehuijbers1288]

haven't you been an f2 driver?

[@megaplexXxHD]

Well thats what you get for buying the game every year and creating content on it 😂🤷🏽‍♂️ dont know why everyones so surprised

[@jarnoopmeerclips]

1. i don't buy the game 2. it's my job

[@theblackimposter8781]

Someone send this to aarava immediately

[@ndrb7596]

EA couldn’t even pass a junior high science class with heat capacity principles

[@AleksisA88]

since you bring up heat capacity, which tyre has a larger heat capacity, the one with more air in it, or less? I will give you a hint: the one with more pressure. Regardless, heat capacity is mostly irrelevant in this discussion anyway.

[@ndrb7596]

@@AleksisA88 why did you even respond to answer your own question?

[@footballshowItaly]

The answer is simple: pV = mRT With V, m, R = const. we also get: p/T = const. It follows that if we increase pressure, Temperature must also increase. Guys that’s middle school science here, ideal gas equation

[@Essence1123]

This applies only at *ideal* conditions at a single instance in time and has ZERO relation to the heat *generated by the tire* and external factors. That is why it's called the ideal gas law, not the always gas law. That law explains how if tires get hotter the gas temperature/pressure goes up as a result but it does *not* explain the effects of pressure on the friction of the rubber or the flexing of the tire which are the primary contributors to tire heating. Source: literally an engineer

[@footballshowItaly]

@@Essence1123air can be approximated to an ideal gas (i mean are you an engineer?) I understand what you say, but I think both you and the ea team are overestimating the impact of friction on temperature. Keep in mind that lowering the pressure of a tire doesn’t mean that the tire will be completely defleated. The change in contact surface is not as big as people think it is. Source: i’m an engineer and a go kart driver.

[@loadout3727]

@@footballshowItaly Still not what is meant in the video nor in the answer of this guy

[@WigSplitters]

@@footballshowItaly yeah but you go on to say that the answer is simple, when in fact it is not a simple answer, and theres no need in putting people down for having a different view/opinion

[@footballshowItaly]

@@WigSplitters I’m sorry, but it’s not even an opinion, it’s a fact. I can see why people get confused, and I apoligize if my words sounded arrogant.

[@Holoflux]

When are people gonna accept that this ISN'T a Sim nor a proper esports title? They can't even get their coding correctly

[@nako6429]

I was watching it live and laughing so hard when people tried to explain why the game is right and Jarno wrong 😂

[@flix7963]

pV = nRT It's called the ideal gas law...higher pressure p leads to higher temperature T, The rest of the letters dont need to bother you

[@kf5058]

yes the rest of the variables matter. In the garage you are not increasing pressure, you are increasing n or the amount of gas. if you add more air into you tires it doesnt just magically heat up. we are talking about tyre temperature and not the air inside it.

[@flix7963]

Well but the air temperature inside has impact on the tyre temperature. And R is in this case completely irrelevant, and the volume also doesn't change significantly, that's what I meant. Tyre pressure has an effect on gas temperature which has an effect on the tyre temperature.

[@kf5058]

@@flix7963 in racing its the other way around. the friction of tyre and asphalt + flexing of tyre will cause a rise in rubber temp and cause air inside to heat up. checking the specific heat capacity of air and rubber will explain why hot air wont have a significant impact on tyre temp

[@marcelitoh1000]

Never in my life would I think I'd live to see the day when an F1 game couldn't grasp basic physics.

[@TICATNUMBER16]

EA ruined F1 :) they’ll just sell terrible reskins every year like Madden now

[@RobbertsTravelGuides]

This game is genuently a dumpsterfire

[@TomH2681]

Do people not realize that Jarno Opmeer is a REAL racing driver?

[@ArchOfficial]

Racing drivers are roughly as qualified in tire engineering as race track janitors.